ci: push perf test metrics even when the testsuite doesn't pass

The corresponding commit might introduce a regression on a perf test, in which
case we certainly want to record it. The testsuite might also fail because
of a test unrelated to performance, in which case we want to record that the
perf test results were good.

Either way, we likely want to record them under all circumstances but
we don't without this patch.

Metric Decrease:
    T3586

Metric Increase:
    lazy-bs-alloc